A vacuum source is a device or system that creates a vacuum, which is a space devoid of matter, including air. Common types of vacuum sources include vacuum pumps, which remove air and other gases from a sealed environment, and vacuum chambers, which are containers designed to maintain a low-pressure atmosphere. These sources are essential in various applications, such as scientific research, manufacturing, and packaging. Vacuum sources can be categorized into two main types: positive displacement pumps and dynamic pumps. Positive displacement pumps work by trapping a volume of gas and then expelling it, while dynamic pumps use high-speed rotating blades to push gas out. Both types are crucial for achieving the desired vacuum levels in different industrial and laboratory settings.